Immunization of children previously primed with GSK pneumococcal vaccine GSK1024850A and of unprimed children in Nigeria
Trial overview
Number of subjects reporting Grade 3 symptoms (solicited and unsolicited).
Timeframe: Within 31 days (Day 0 to Day 30) after administration of a booster dose of Synflorix vaccine in the Synflorix/Infanrix primed Group.
Concentrations of antibodies against vaccine pneumococcal serotypes.
Timeframe: Prior to and one month after the booster immunisation for the Synflorix/Infanrix primed Group and prior to the first dose and one month after Dose 2 in the Synflorix/Infanrix unprimed Group
Concentrations of antibodies against cross-reactive pneumococcal serotypes.
Timeframe: Prior to and one month after the booster immunisation for the Synflorix/Infanrix primed Group and prior to the first dose and one month after Dose 2 in the Synflorix/Infanrix unprimed Group
Opsonophagocytic activity against vaccine pneumococcal serotypes.
Timeframe: One month after the booster immunisation for the Synflorix/Infanrix primed Group and one month after Dose 2 in the Synflorix/Infanrix unprimed Group
Opsonophagocytic activity against cross-reactive pneumococcal serotypes.
Timeframe: One month after the booster immunisation for the Synflorix/Infanrix primed Group and one month after Dose 2 in the Synflorix/Infanrix unprimed Group
Concentration of antibodies against protein D (PD).
Timeframe: Prior to and one month after the booster immunisation for the Synflorix/Infanrix primed Group and prior to the first dose and one month after Dose 2 in the Synflorix/Infanrix unprimed Group
Number of subjects reporting any and grade 3 solicited local AEs.
Timeframe: Within 4 days (Days 0-3) after vaccination.
Number of subjects reporting any, grade 3 and related solicited general AEs.
Timeframe: Within 4 days (Days 0-3) after vaccination.
Number of subjects reporting unsolicited AEs.
Timeframe: Within 31 days (Days 0-30) after vaccination
Number of subjects reporting serious adverse events (SAEs).
Timeframe: During the entire study period, from the vaccination visit at Day 0 up to the end of the follow-up visit at Month 1 for the Synflorix/Infanrix primed Group and up to Month 3 for the Synflorix/Infanrix unprimed Group.
- Subjects who the investigator believes that their parent(s)/Legally Acceptable Representative(s) (LAR(s)) can and will comply with the requirements of the protocol.
- A male or female, between and including 15-21 months of age at the time of visit 1.
- Use of any investigational or non-registered product other than the study vaccine(s)/product(s) within 30 days preceding the first dose of vaccine, or planned use during the study period.
- Chronic administration of immunosuppressants or other immune-modifying drugs within six months prior to vaccination.
- A male or female, between and including 15-21 months of age at the time of visit 1.
- For the Pn-Pn group, subjects who completed the full vaccination course in study NCT00678301. For the Zil-Pn group, subjects who were previously enrolled in the control group of study NCT00678301.
- Written informed consent, signed or thumb printed, obtained from the parent(s)/LAR(s) of the subject. Where parent(s)/LAR(s) are illiterate, the consent form will be countersigned by a witness.
- Healthy subjects as established by medical history and clinical examination before entering into the study.
Subjects who the investigator believes that their parent(s)/Legally Acceptable Representative(s) (LAR(s)) can and will comply with the requirements of the protocol.
- Chronic administration of immunosuppressants or other immune-modifying drugs within six months prior to vaccination.
- Planned administration/administration of a vaccine not foreseen by the study protocol during the period starting from 30 days before each dose of study vaccine and ending 30 days after. Locally recommended vaccines for example Oral Polio Vaccine or influenza vaccine are always allowed, even if concomitantly administered with the study vaccines, but should be documented in the CRF.
- Concurrently participating in another clinical study at any time during the study period, in which the subject has been or will be exposed to an investigational or a non-investigational product.
- Administration of any pneumococcal vaccine since the end of study NCT00678301.
- Any confirmed or suspected immunosuppressive or immunodeficient condition, since the end of study NCT00678301, based on medical history and physical examination.
- Major congenital defects or serious chronic illness.
- History of any progressive neurological disorders or seizures.
- Acute disease and/or fever at the time of enrolment.
- History of any reaction or hypersensitivity likely to be exacerbated by any component of the vaccines.
- Administration of immunoglobulins and/or any blood products less than 3 months prior to visit 1 or planned use during the study.
- Child in care.
Use of any investigational or non-registered product other than the study vaccine(s)/product(s) within 30 days preceding the first dose of vaccine, or planned use during the study period.
Trial location(s)
Study documents
If you wish to request for full study report, please contact - [email protected]
Results overview
Results posted on ClinicalTrials.gov
Plain language summaries
Plain language summaries of clinical trial results for Phase 2-4 clinical trials that were initiated on or after January 2022 will be posted by GSK within one year following study completion.